Function ramp_control_value

Descent3/Controls.cpp:560–569

ramping macros

// ramping macros
static inline float ramp_control_value(float val, float limit, float &ramp_state, float &old_ramp_delta) {
  float sign = val / fabs(val), old_sign = old_ramp_delta / fabs(old_ramp_delta);
  if (sign != old_sign)
    ramp_state = -ramp_state;
  ramp_state = (val != 0) ? (ramp_state + val) : 0.0f;
  ramp_state = (ramp_state > limit) ? limit : (ramp_state < -limit) ? (-limit) : ramp_state;
  old_ramp_delta = val;

  return ramp_state;
}

//	INITIALIZATION FUNCTIONS